12 Customer Reviews

by Donald J S. on 09/01/2017

"Works well for the project I used it on. QC Spring is ok for replaceing the spring even if you have to break down the gun to do it. Micro Trigger switch is awesome and that should be in every AEG Gearbox in my opinion.

by Jon Kristian K. on 08/16/2017

"It's a vert good start. Well shimd And short triggeraction. But the piston, pistonhead, cylinderhead And airnozzel should be changed. The cylinder could also use a upgrade, but works Ok. I use this gearbox in all my AEG's. Love the quick spring change!

by Brandon Thomas G. on 05/02/2017

"Gearbox is solid and quiet. Shimmed perfectly. Fires great with the lonex A1 motor. Gearbox fit perfect in my m4. Only issue was getting the metal lonex hop up to seat properly.

by mike b. on 01/27/2016

"Excellent gear box for the money, buy this if your looking for a micro switch and a QD spring.
If your interested in the internals:
+Great high quality gear set
+robust and reliable micro switch
+quality gearbox shell
+good wires
+good spring
and for the bad things:
-its cylinder, cylinder head, piston head, and air nozzle are all just about trash.
this is the only downside but this is always somthing specific to your airsoft gun however so its an often replaced item as i planed to replace them anyway, and i dont consider it as much of a downside and i think the box is an excellent deal

by Robin H. on 09/14/2013

"First off the box of this says it's dboys, but it actually very nice. As soon as I took it out of the well padded box I could tell it was solid. It's a bit tight in my 416 body but it still fits, and since its a dboys gearbox, it should fit perfectly in a dboys body.

Pros: great shimming, great gears and air compression, the qd spring is mice if you switch from field to cqb, the micro trigger gives it a great response, and a great rof with a lonex a1 motor and a 9.6 battery

Cons: none really, but I would not recommend an 11.1 lipo in this

Overall this was a great purchase for the money, I highly recommend this gearbox

by Keenan g. on 03/14/2013

"This is the best gearbox ever!!!
I put a m140 in and used a matrix magnum motor.

PROS:
This shoots hard and fast with a 9.6v
You dont need to take the whole gearbox apart
To put a better spring in

CONS:
Not really any i put it in a friends PDW and i had
To file parts out but its over all good.

by steven B. on 12/23/2011

"I love the quick spring release so u don't have to take apart the whole gearbox, and I also lik the trigger response. To me there is nothing wrong with this product. Really reliable.

by Raquel R. on 04/24/2015

"This is a great gearbox for the money, however it has it's many pros and cons to it.
Cons: tight fit in guns reciver ( g&g cm )
: it has selector switch issues, can be easily fixed
: spring isn't m120
: some of the body pin holes army the right size way to small
Pros: decently shimmed gearbox
: nice gears
: it's a qd spring change that's a huge pro !
: very sturdy gearbox with a lot of heft
: nice Matt finish but my gearbox came with a purple cylinder ( that's ok)
All in all it's a OK gearbox but it still holding through perfectly, do t buy this with no tech xp

by Ac M. on 05/05/2013

"This is the Airsmith's dream gearbox for the M4/16 platform.
Please note that although this is a great Mechbox to start off with it does have some issues...

1st off it will NOT fit in a G&P or a KWA body without mods, but this it to be expected because both company's use parts made just for their brand.

2nd, if you plan on upgrading this with a stronger spring, or change the gears, do yourself a favor and get a new piston pronto, as well as a new air nozzle. they are both plastic and cheaply made and under high stress they will fail.

Other than that I have to say I love the bushing/bearing combo. Bearings where needed for a high speed setup and bushings on the gear that can not have wobble.

All in all this is a great box for the price.....

I have mine installed with 13:1 Super High Speed Gears, A High Speed piston with AOE modified with a sorbo pad, running a Tornado Motor, pushing a Prometheus M115 spring.

Cronoed with .25s at just under 300 FPS (360ish with .20s) but ROF is over 30 RPS!!! I had to get the High feed mags to keep up with this speed beast!!!

by Brent S. on 01/25/2012

"This is a superb concept in gearboxes! I wish they had always done them this way! However it is only made for an M4, you cannot swap out normal Ver. II selector plates or switches! The new switch is a great design and in my opinion doesn't necessarily require a mosfet in most cases unless you use a lipo. The gears and piston that come with it are more for speed then power but the spring swap-out is flawless. You may require some custom fitting and if your stock needs to screw into the block on the back you may have an issue? I can't tell for sure because I bought this trying to convert it for an MP5 and it will not work! I rate this box perfect for around 400 FPS. This is great all around but do not try and convert it for anything but an M4 because you can't!

by austin c. on 03/24/2015

"its a good build box and it was really easy to work with the internals, but it it would take a few shots and stop, it would act like the microswitch would work then stop but once i took the gearbox apart and put it together it would work again. Besides this problem the box is great but once i put it any of my receivers it does not like it.
:( to bad it did not work, it just means more parts for me

by traci B. on 10/05/2013

"i got the gearbox yesterday and it seemed pretty good when i was looking it over but when i tried to put it in my gun the tirrger would not go as far back as it need to in order to go in my gun i sanded the trigger hole till i was able to put it in but then it would only go on semi and my hop up would not fit around the nossle i am sill trying to get to work correct the spring guide is also plastic it seems like o good box you just need to be ready to modify the gun or the box. i will try to put more as soon as i get it to work correct. i did change the spring before i tried to put it in my gun and it was a lot easier then taking the hole thing apart

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